1

Mathematics

2 answers:

xxTIMURxx [149]3 years ago

8 0

(x-4)(x-4)= 0

x-4= 0 , x-4= 0

x-4+4= 0+4 , x-4+4= 0

x= 4 , x= 4

Answer is x= 4 (C.)

Whitepunk [10]3 years ago

6 0

Answer:

x = {4, 4}

Step-by-step explanation:

(x - 4)(x - 4) = 0 has two real, equal roots: x = 4 and x = 4. Notice that subbing 4 for x in this equation results in a TRUE equation.

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astra-53 [7]

Answer:

9 years.

Step-by-step explanation:

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6 0

3 years ago

Which of the following are factors of x^4 – 16? Select all that apply.

nekit [7.7K]

<h2>Answer:</h2><h2>x^2+4 and X+2</h2>

Solution,

x^4-16

= (X^2)^2-(4)^2

Use the formula(a^2-b^2)

= (x^2+4)(x^2-4)

=(x^2+4)(x^2-2^2)

=(x^2+4)(X+2)(x-2)

Hope it helps

Good luck on your assignment

5 0

3 years ago

Read 2 more answers

The per capita electric power consumption level in a recent year in Ecuador is normally distributed, with a mean of 471.5 kilo-w

Olin [163]

Answer:

a) 471.5 kilo-watt hours.

b) 31.76 kilo-watt hours

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean $\mu$ and standard deviation $\sigma$ , the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean $\mu$ and standard deviation $s = \frac{\sigma}{\sqrt{n}}$ .